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Management and Evaluation of Large Scale Water System for Sustainable Agriculture Development and for Envilonment Maintenance.

可持续农业发展和环境维护的大型水系统的管理和评估。

基本信息

批准号：
05556039
负责人：
KURODA Masaharu
金额：
$ 12.54万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1995
项目状态：
已结题

项目摘要

Managements of large water system widely spreading in river basin is characterized by the reuse mechanism of return flow in the basin. The effective water use is performed using the mechanism.In this research, (1) water use patterns were analyzed for several water systems having various conditions, and (2) the changing process of water qualities were clarified concerning water use patterns in the systems. Several technics on reasonable water management were proposed as the results of the research for keeping environmental maintenance in rural areas having various conditions.Field surveyings and experimental analyzings were carried out for several areas i. e., The Kasagawa Basin (creek area), The Kasumigaura District (closed water basin and paddy area), The Shinanogawa Basin (low lying paddy area), The Ishikarigawa Basin (wide paddy area) and The Sendaigawa Basin (narrow & inclined area). The characteristics of water management were examined and the factors affecting the water managements were pointed out with considering the water qualities for each area. Particularly, theoretical and experimental analyzes for clarifying the dynamic relationships between (1) cyclic velosity of water in the system (the reuse ratio of water in the system) and (2) water quality indexes such as dissolved oxygen, total nitrogen, total phosphate and so on.The obtained results concerning this research were published as original papers in several journals.

广泛分布于流域的大型水系，其管理的特点是流域回水再利用机制。在本研究中，（1）分析了具有不同条件的几个水系统的用水模式，（2）阐明了系统中用水模式的水质变化过程。通过对不同条件下农村生态环境维护的研究，提出了合理用水管理的几项技术，并对不同条件下农村生态环境维护的几个地区进行了实地调查和试验分析。例如，笠川盆地（小溪区）、霞浦区（闭水盆地和稻田区）、信浓川盆地（低洼稻田区）、石狩川盆地（宽阔稻田区）和仙台川盆地（狭窄倾斜区）。分析了水资源管理的特点，并结合各地区的水质状况，指出了影响水资源管理的因素。特别是对系统中水循环速度（系统中水回用率）与溶解氧、总氮、总磷酸盐等水质指标之间的动态关系进行了理论和实验分析，并在多个期刊上发表了原创论文。